Mercedes-Benz S-Class 2020 Owner's Manual page 298

Extending the ball neck fully electrically
To extend: pull button 2.
#
Indicator lamp 1 will flash and the display
message Trailer coupling in motion
appear on the driver's display.
The ball neck will extend fully electrically.
Wait until the ball neck has locked in place.
#
When indicator lamp
the ball neck is securely locked in place.
If the ball neck is not securely locked in
place, indicator lamp
display message
appear on the driver's display.
will
1 is continuously lit,
1 will flash and the
Check trailer hitch lock will
Driving and parking 295
Retracting the ball neck fully electrically
Pull button 2.
#
Indicator lamp 1 will flash and the display
message Trailer coupling in motion
appear on the driver's display.
The ball neck will retract fully electrically.
Wait until the ball neck has locked in place.
#
When indicator lamp 1 goes out, the ball
neck is securely locked in place.
If the ball neck is not securely locked in
place, indicator lamp 1 will flash and the
display message Trailer coupling Check lock
will appear on the driver's display.
Observe the information about the notifications
on the driver's display:
Warning and indicator lamps (
R
Display messages ( page 503)
/
R
will
page 561)
/